The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 18, 1990
Filed:
Apr. 29, 1988
Michael D Kotzin, Buffalo Grove, IL (US);
Anthony P van den Heuvel, Arlington Heights, IL (US);
Kenneth J Crisler, Wheaton, IL (US);
Bradley M Hiben, Glen Ellyn, IL (US);
Lawrence M Mohl, Hoffman Estates, IL (US);
Mark R Poulin, Forest Park, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
According to the invention, an information signal, such as a information signal, is sampled, quantized and processed digitally through an information encoder. Digitally processed samples produced by the encoder are modulated onto a communication channel to create channel symbols having a magnitude of modulation proportional to a characteristic of a respective digitally processed sample. Both a radio frequency (RF) transmission embodiment, and a wireline embodiment are provided. In a final aspect of the present invention, encryption is provided to ensure communication privacy.